./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/pthread-ext/39_rand_lock_p0_vs.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/pthread-ext/39_rand_lock_p0_vs.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 13ffae79fd42fd88852ffaba2bbbf2601df90fdda2b5dc6bd9b6228e2cf540c7 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 02:36:02,139 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 02:36:02,142 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 02:36:02,184 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 02:36:02,184 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 02:36:02,187 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 02:36:02,190 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 02:36:02,193 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 02:36:02,196 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 02:36:02,201 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 02:36:02,202 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 02:36:02,204 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 02:36:02,204 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 02:36:02,206 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 02:36:02,207 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 02:36:02,211 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 02:36:02,212 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 02:36:02,213 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 02:36:02,215 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 02:36:02,219 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 02:36:02,221 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 02:36:02,232 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 02:36:02,234 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 02:36:02,235 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 02:36:02,242 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 02:36:02,242 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 02:36:02,242 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 02:36:02,244 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 02:36:02,245 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 02:36:02,246 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 02:36:02,246 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 02:36:02,248 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 02:36:02,250 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 02:36:02,251 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 02:36:02,252 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 02:36:02,252 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 02:36:02,253 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 02:36:02,253 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 02:36:02,253 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 02:36:02,254 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 02:36:02,255 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 02:36:02,256 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-30 02:36:02,291 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 02:36:02,291 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 02:36:02,293 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 02:36:02,293 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 02:36:02,294 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 02:36:02,294 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 02:36:02,295 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 02:36:02,295 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 02:36:02,295 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 02:36:02,295 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 02:36:02,296 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 02:36:02,296 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 02:36:02,297 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 02:36:02,297 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 02:36:02,297 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 02:36:02,297 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-30 02:36:02,297 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-30 02:36:02,298 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-30 02:36:02,298 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 02:36:02,298 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-30 02:36:02,298 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 02:36:02,298 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 02:36:02,299 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 02:36:02,299 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 02:36:02,299 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 02:36:02,299 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 02:36:02,299 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 02:36:02,300 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 02:36:02,300 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 02:36:02,300 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 02:36:02,300 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 02:36:02,300 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 02:36:02,301 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 02:36:02,301 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 02:36:02,301 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 13ffae79fd42fd88852ffaba2bbbf2601df90fdda2b5dc6bd9b6228e2cf540c7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 02:36:02,641 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 02:36:02,665 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 02:36:02,667 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 02:36:02,668 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 02:36:02,668 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 02:36:02,670 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/39_rand_lock_p0_vs.i [2023-08-30 02:36:03,841 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 02:36:04,145 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 02:36:04,145 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/39_rand_lock_p0_vs.i [2023-08-30 02:36:04,167 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19bdaa5e6/81e75c7504cb4cb4862eff36c0c78db5/FLAGcd947972e [2023-08-30 02:36:04,187 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19bdaa5e6/81e75c7504cb4cb4862eff36c0c78db5 [2023-08-30 02:36:04,190 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 02:36:04,191 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 02:36:04,194 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 02:36:04,194 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 02:36:04,197 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 02:36:04,198 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:36:04" (1/1) ... [2023-08-30 02:36:04,199 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@354e6c83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:36:04, skipping insertion in model container [2023-08-30 02:36:04,199 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:36:04" (1/1) ... [2023-08-30 02:36:04,204 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 02:36:04,247 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 02:36:04,397 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-30 02:36:04,547 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/39_rand_lock_p0_vs.i[30959,30972] [2023-08-30 02:36:04,559 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 02:36:04,568 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 02:36:04,593 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-30 02:36:04,611 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/39_rand_lock_p0_vs.i[30959,30972] [2023-08-30 02:36:04,643 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 02:36:04,701 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 02:36:04,701 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 02:36:04,701 WARN L667 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 02:36:04,707 INFO L208 MainTranslator]: Completed translation [2023-08-30 02:36:04,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:36:04 WrapperNode [2023-08-30 02:36:04,708 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 02:36:04,709 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 02:36:04,710 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 02:36:04,710 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 02:36:04,716 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:36:04" (1/1) ... [2023-08-30 02:36:04,745 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:36:04" (1/1) ... [2023-08-30 02:36:04,771 INFO L138 Inliner]: procedures = 176, calls = 21, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 76 [2023-08-30 02:36:04,772 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 02:36:04,773 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 02:36:04,773 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 02:36:04,774 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 02:36:04,781 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:36:04" (1/1) ... [2023-08-30 02:36:04,781 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:36:04" (1/1) ... [2023-08-30 02:36:04,789 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:36:04" (1/1) ... [2023-08-30 02:36:04,790 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:36:04" (1/1) ... [2023-08-30 02:36:04,802 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:36:04" (1/1) ... [2023-08-30 02:36:04,808 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:36:04" (1/1) ... [2023-08-30 02:36:04,815 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:36:04" (1/1) ... [2023-08-30 02:36:04,818 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:36:04" (1/1) ... [2023-08-30 02:36:04,822 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 02:36:04,823 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 02:36:04,823 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 02:36:04,823 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 02:36:04,824 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:36:04" (1/1) ... [2023-08-30 02:36:04,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 02:36:04,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 02:36:04,854 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 02:36:04,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 02:36:04,903 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-30 02:36:04,903 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-30 02:36:04,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 02:36:04,904 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 02:36:04,904 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 02:36:04,904 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 02:36:04,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 02:36:04,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 02:36:04,904 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 02:36:04,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 02:36:04,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 02:36:04,906 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 02:36:05,091 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 02:36:05,111 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 02:36:05,275 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 02:36:05,321 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 02:36:05,321 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-30 02:36:05,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:36:05 BoogieIcfgContainer [2023-08-30 02:36:05,323 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 02:36:05,329 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 02:36:05,329 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 02:36:05,332 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 02:36:05,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 02:36:04" (1/3) ... [2023-08-30 02:36:05,333 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c9cca6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:36:05, skipping insertion in model container [2023-08-30 02:36:05,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:36:04" (2/3) ... [2023-08-30 02:36:05,334 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c9cca6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:36:05, skipping insertion in model container [2023-08-30 02:36:05,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:36:05" (3/3) ... [2023-08-30 02:36:05,335 INFO L112 eAbstractionObserver]: Analyzing ICFG 39_rand_lock_p0_vs.i [2023-08-30 02:36:05,351 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 02:36:05,352 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-08-30 02:36:05,352 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 02:36:05,438 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 02:36:05,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 68 places, 68 transitions, 141 flow [2023-08-30 02:36:05,535 INFO L130 PetriNetUnfolder]: 4/83 cut-off events. [2023-08-30 02:36:05,535 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 02:36:05,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 83 events. 4/83 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 103 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 53. Up to 4 conditions per place. [2023-08-30 02:36:05,541 INFO L82 GeneralOperation]: Start removeDead. Operand has 68 places, 68 transitions, 141 flow [2023-08-30 02:36:05,547 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 68 transitions, 141 flow [2023-08-30 02:36:05,550 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 02:36:05,572 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 68 places, 68 transitions, 141 flow [2023-08-30 02:36:05,577 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 68 places, 68 transitions, 141 flow [2023-08-30 02:36:05,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 68 places, 68 transitions, 141 flow [2023-08-30 02:36:05,601 INFO L130 PetriNetUnfolder]: 4/83 cut-off events. [2023-08-30 02:36:05,603 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 02:36:05,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 83 events. 4/83 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 103 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 53. Up to 4 conditions per place. [2023-08-30 02:36:05,607 INFO L119 LiptonReduction]: Number of co-enabled transitions 1296 [2023-08-30 02:36:07,603 INFO L134 LiptonReduction]: Checked pairs total: 1114 [2023-08-30 02:36:07,604 INFO L136 LiptonReduction]: Total number of compositions: 68 [2023-08-30 02:36:07,628 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 02:36:07,635 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@17033b67, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 02:36:07,635 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-08-30 02:36:07,640 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2023-08-30 02:36:07,640 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 02:36:07,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:36:07,642 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 02:36:07,643 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2023-08-30 02:36:07,648 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:36:07,648 INFO L85 PathProgramCache]: Analyzing trace with hash 10864, now seen corresponding path program 1 times [2023-08-30 02:36:07,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:36:07,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016084943] [2023-08-30 02:36:07,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:36:07,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:36:07,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:36:07,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:36:07,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:36:07,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016084943] [2023-08-30 02:36:07,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016084943] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:36:07,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:36:07,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 02:36:07,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006857137] [2023-08-30 02:36:07,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:36:07,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 02:36:07,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:36:07,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 02:36:07,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 02:36:07,855 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 136 [2023-08-30 02:36:07,856 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 13 transitions, 31 flow. Second operand has 2 states, 2 states have (on average 61.0) internal successors, (122), 2 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:36:07,857 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:36:07,857 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 136 [2023-08-30 02:36:07,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:36:07,883 INFO L130 PetriNetUnfolder]: 17/42 cut-off events. [2023-08-30 02:36:07,883 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 02:36:07,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 42 events. 17/42 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 96 event pairs, 12 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 72. Up to 42 conditions per place. [2023-08-30 02:36:07,885 INFO L137 encePairwiseOnDemand]: 134/136 looper letters, 10 selfloop transitions, 0 changer transitions 0/11 dead transitions. [2023-08-30 02:36:07,885 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 14 places, 11 transitions, 47 flow [2023-08-30 02:36:07,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 02:36:07,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 02:36:07,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 132 transitions. [2023-08-30 02:36:07,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4852941176470588 [2023-08-30 02:36:07,898 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 132 transitions. [2023-08-30 02:36:07,899 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 132 transitions. [2023-08-30 02:36:07,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:36:07,902 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 132 transitions. [2023-08-30 02:36:07,905 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 66.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:36:07,909 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:36:07,909 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:36:07,911 INFO L175 Difference]: Start difference. First operand has 15 places, 13 transitions, 31 flow. Second operand 2 states and 132 transitions. [2023-08-30 02:36:07,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 14 places, 11 transitions, 47 flow [2023-08-30 02:36:07,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 14 places, 11 transitions, 47 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 02:36:07,915 INFO L231 Difference]: Finished difference. Result has 14 places, 11 transitions, 27 flow [2023-08-30 02:36:07,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=27, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=27, PETRI_PLACES=14, PETRI_TRANSITIONS=11} [2023-08-30 02:36:07,925 INFO L281 CegarLoopForPetriNet]: 15 programPoint places, -1 predicate places. [2023-08-30 02:36:07,926 INFO L495 AbstractCegarLoop]: Abstraction has has 14 places, 11 transitions, 27 flow [2023-08-30 02:36:07,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 61.0) internal successors, (122), 2 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:36:07,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:36:07,927 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 02:36:07,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 02:36:07,928 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2023-08-30 02:36:07,936 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:36:07,938 INFO L85 PathProgramCache]: Analyzing trace with hash 10860, now seen corresponding path program 1 times [2023-08-30 02:36:07,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:36:07,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154318934] [2023-08-30 02:36:07,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:36:07,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:36:07,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:36:08,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:36:08,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:36:08,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154318934] [2023-08-30 02:36:08,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154318934] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:36:08,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:36:08,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 02:36:08,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622315402] [2023-08-30 02:36:08,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:36:08,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 02:36:08,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:36:08,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 02:36:08,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 02:36:08,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 136 [2023-08-30 02:36:08,035 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 14 places, 11 transitions, 27 flow. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:36:08,035 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:36:08,036 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 136 [2023-08-30 02:36:08,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:36:08,051 INFO L130 PetriNetUnfolder]: 13/33 cut-off events. [2023-08-30 02:36:08,052 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 02:36:08,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 33 events. 13/33 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 69 event pairs, 9 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 68. Up to 32 conditions per place. [2023-08-30 02:36:08,052 INFO L137 encePairwiseOnDemand]: 134/136 looper letters, 8 selfloop transitions, 1 changer transitions 0/10 dead transitions. [2023-08-30 02:36:08,053 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 15 places, 10 transitions, 43 flow [2023-08-30 02:36:08,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:36:08,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:36:08,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 172 transitions. [2023-08-30 02:36:08,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4215686274509804 [2023-08-30 02:36:08,055 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 172 transitions. [2023-08-30 02:36:08,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 172 transitions. [2023-08-30 02:36:08,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:36:08,056 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 172 transitions. [2023-08-30 02:36:08,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:36:08,058 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:36:08,059 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:36:08,059 INFO L175 Difference]: Start difference. First operand has 14 places, 11 transitions, 27 flow. Second operand 3 states and 172 transitions. [2023-08-30 02:36:08,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 15 places, 10 transitions, 43 flow [2023-08-30 02:36:08,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 15 places, 10 transitions, 43 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 02:36:08,060 INFO L231 Difference]: Finished difference. Result has 15 places, 10 transitions, 27 flow [2023-08-30 02:36:08,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=25, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=27, PETRI_PLACES=15, PETRI_TRANSITIONS=10} [2023-08-30 02:36:08,061 INFO L281 CegarLoopForPetriNet]: 15 programPoint places, 0 predicate places. [2023-08-30 02:36:08,061 INFO L495 AbstractCegarLoop]: Abstraction has has 15 places, 10 transitions, 27 flow [2023-08-30 02:36:08,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:36:08,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:36:08,062 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 02:36:08,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 02:36:08,062 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2023-08-30 02:36:08,063 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:36:08,063 INFO L85 PathProgramCache]: Analyzing trace with hash 10858, now seen corresponding path program 1 times [2023-08-30 02:36:08,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:36:08,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529004929] [2023-08-30 02:36:08,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:36:08,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:36:08,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:36:08,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:36:08,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:36:08,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529004929] [2023-08-30 02:36:08,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529004929] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:36:08,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:36:08,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 02:36:08,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974816827] [2023-08-30 02:36:08,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:36:08,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 02:36:08,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:36:08,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 02:36:08,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 02:36:08,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 136 [2023-08-30 02:36:08,158 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 10 transitions, 27 flow. Second operand has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:36:08,158 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:36:08,158 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 136 [2023-08-30 02:36:08,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:36:08,173 INFO L130 PetriNetUnfolder]: 9/24 cut-off events. [2023-08-30 02:36:08,174 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 02:36:08,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56 conditions, 24 events. 9/24 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 41 event pairs, 6 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 51. Up to 23 conditions per place. [2023-08-30 02:36:08,174 INFO L137 encePairwiseOnDemand]: 134/136 looper letters, 7 selfloop transitions, 1 changer transitions 0/9 dead transitions. [2023-08-30 02:36:08,175 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 16 places, 9 transitions, 41 flow [2023-08-30 02:36:08,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:36:08,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:36:08,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 174 transitions. [2023-08-30 02:36:08,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4264705882352941 [2023-08-30 02:36:08,177 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 174 transitions. [2023-08-30 02:36:08,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 174 transitions. [2023-08-30 02:36:08,177 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:36:08,177 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 174 transitions. [2023-08-30 02:36:08,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:36:08,179 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:36:08,179 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:36:08,179 INFO L175 Difference]: Start difference. First operand has 15 places, 10 transitions, 27 flow. Second operand 3 states and 174 transitions. [2023-08-30 02:36:08,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 16 places, 9 transitions, 41 flow [2023-08-30 02:36:08,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 15 places, 9 transitions, 40 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 02:36:08,180 INFO L231 Difference]: Finished difference. Result has 15 places, 9 transitions, 26 flow [2023-08-30 02:36:08,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=24, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=9, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=26, PETRI_PLACES=15, PETRI_TRANSITIONS=9} [2023-08-30 02:36:08,181 INFO L281 CegarLoopForPetriNet]: 15 programPoint places, 0 predicate places. [2023-08-30 02:36:08,181 INFO L495 AbstractCegarLoop]: Abstraction has has 15 places, 9 transitions, 26 flow [2023-08-30 02:36:08,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:36:08,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:36:08,182 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 02:36:08,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 02:36:08,182 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2023-08-30 02:36:08,183 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:36:08,183 INFO L85 PathProgramCache]: Analyzing trace with hash 10443338, now seen corresponding path program 1 times [2023-08-30 02:36:08,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:36:08,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353387550] [2023-08-30 02:36:08,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:36:08,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:36:08,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:36:08,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:36:08,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:36:08,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353387550] [2023-08-30 02:36:08,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353387550] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:36:08,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:36:08,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 02:36:08,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928591302] [2023-08-30 02:36:08,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:36:08,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 02:36:08,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:36:08,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 02:36:08,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 02:36:08,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 136 [2023-08-30 02:36:08,233 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 9 transitions, 26 flow. Second operand has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:36:08,233 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:36:08,233 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 136 [2023-08-30 02:36:08,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:36:08,253 INFO L130 PetriNetUnfolder]: 7/19 cut-off events. [2023-08-30 02:36:08,253 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 02:36:08,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 19 events. 7/19 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 23 event pairs, 2 based on Foata normal form. 0/16 useless extension candidates. Maximal degree in co-relation 42. Up to 13 conditions per place. [2023-08-30 02:36:08,253 INFO L137 encePairwiseOnDemand]: 133/136 looper letters, 7 selfloop transitions, 2 changer transitions 0/10 dead transitions. [2023-08-30 02:36:08,253 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 16 places, 10 transitions, 46 flow [2023-08-30 02:36:08,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:36:08,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:36:08,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 184 transitions. [2023-08-30 02:36:08,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45098039215686275 [2023-08-30 02:36:08,256 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 184 transitions. [2023-08-30 02:36:08,257 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 184 transitions. [2023-08-30 02:36:08,257 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:36:08,257 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 184 transitions. [2023-08-30 02:36:08,258 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:36:08,264 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:36:08,264 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:36:08,264 INFO L175 Difference]: Start difference. First operand has 15 places, 9 transitions, 26 flow. Second operand 3 states and 184 transitions. [2023-08-30 02:36:08,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 16 places, 10 transitions, 46 flow [2023-08-30 02:36:08,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 15 places, 10 transitions, 45 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 02:36:08,265 INFO L231 Difference]: Finished difference. Result has 15 places, 8 transitions, 27 flow [2023-08-30 02:36:08,265 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=23, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=27, PETRI_PLACES=15, PETRI_TRANSITIONS=8} [2023-08-30 02:36:08,266 INFO L281 CegarLoopForPetriNet]: 15 programPoint places, 0 predicate places. [2023-08-30 02:36:08,266 INFO L495 AbstractCegarLoop]: Abstraction has has 15 places, 8 transitions, 27 flow [2023-08-30 02:36:08,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:36:08,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:36:08,267 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-30 02:36:08,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 02:36:08,267 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2023-08-30 02:36:08,268 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:36:08,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1446073385, now seen corresponding path program 1 times [2023-08-30 02:36:08,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:36:08,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372021764] [2023-08-30 02:36:08,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:36:08,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:36:08,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 02:36:08,282 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 02:36:08,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 02:36:08,304 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 02:36:08,304 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 02:36:08,305 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2023-08-30 02:36:08,307 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (4 of 6 remaining) [2023-08-30 02:36:08,307 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 6 remaining) [2023-08-30 02:36:08,307 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 6 remaining) [2023-08-30 02:36:08,308 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (1 of 6 remaining) [2023-08-30 02:36:08,308 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 6 remaining) [2023-08-30 02:36:08,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 02:36:08,308 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-08-30 02:36:08,311 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 02:36:08,311 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-30 02:36:08,330 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 02:36:08,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 105 places, 105 transitions, 222 flow [2023-08-30 02:36:08,350 INFO L130 PetriNetUnfolder]: 7/137 cut-off events. [2023-08-30 02:36:08,350 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 02:36:08,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147 conditions, 137 events. 7/137 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 287 event pairs, 0 based on Foata normal form. 0/116 useless extension candidates. Maximal degree in co-relation 89. Up to 6 conditions per place. [2023-08-30 02:36:08,352 INFO L82 GeneralOperation]: Start removeDead. Operand has 105 places, 105 transitions, 222 flow [2023-08-30 02:36:08,354 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 105 places, 105 transitions, 222 flow [2023-08-30 02:36:08,354 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 02:36:08,354 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 105 places, 105 transitions, 222 flow [2023-08-30 02:36:08,354 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 105 places, 105 transitions, 222 flow [2023-08-30 02:36:08,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 105 places, 105 transitions, 222 flow [2023-08-30 02:36:08,375 INFO L130 PetriNetUnfolder]: 7/137 cut-off events. [2023-08-30 02:36:08,376 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 02:36:08,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147 conditions, 137 events. 7/137 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 287 event pairs, 0 based on Foata normal form. 0/116 useless extension candidates. Maximal degree in co-relation 89. Up to 6 conditions per place. [2023-08-30 02:36:08,380 INFO L119 LiptonReduction]: Number of co-enabled transitions 5256 [2023-08-30 02:36:10,270 INFO L134 LiptonReduction]: Checked pairs total: 6566 [2023-08-30 02:36:10,270 INFO L136 LiptonReduction]: Total number of compositions: 100 [2023-08-30 02:36:10,272 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 02:36:10,273 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@17033b67, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 02:36:10,273 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-08-30 02:36:10,274 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2023-08-30 02:36:10,274 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 02:36:10,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:36:10,274 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 02:36:10,274 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-08-30 02:36:10,275 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:36:10,275 INFO L85 PathProgramCache]: Analyzing trace with hash 18409, now seen corresponding path program 1 times [2023-08-30 02:36:10,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:36:10,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421024969] [2023-08-30 02:36:10,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:36:10,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:36:10,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:36:10,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:36:10,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:36:10,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421024969] [2023-08-30 02:36:10,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421024969] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:36:10,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:36:10,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 02:36:10,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870005460] [2023-08-30 02:36:10,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:36:10,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 02:36:10,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:36:10,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 02:36:10,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 02:36:10,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 205 [2023-08-30 02:36:10,313 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 25 transitions, 62 flow. Second operand has 2 states, 2 states have (on average 92.0) internal successors, (184), 2 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:36:10,313 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:36:10,313 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 205 [2023-08-30 02:36:10,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:36:10,425 INFO L130 PetriNetUnfolder]: 372/617 cut-off events. [2023-08-30 02:36:10,426 INFO L131 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2023-08-30 02:36:10,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1254 conditions, 617 events. 372/617 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3084 event pairs, 312 based on Foata normal form. 0/370 useless extension candidates. Maximal degree in co-relation 464. Up to 601 conditions per place. [2023-08-30 02:36:10,433 INFO L137 encePairwiseOnDemand]: 203/205 looper letters, 20 selfloop transitions, 0 changer transitions 0/23 dead transitions. [2023-08-30 02:36:10,433 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 23 transitions, 98 flow [2023-08-30 02:36:10,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 02:36:10,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 02:36:10,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 204 transitions. [2023-08-30 02:36:10,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4975609756097561 [2023-08-30 02:36:10,435 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 204 transitions. [2023-08-30 02:36:10,435 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 204 transitions. [2023-08-30 02:36:10,435 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:36:10,435 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 204 transitions. [2023-08-30 02:36:10,437 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 102.0) internal successors, (204), 2 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:36:10,440 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 205.0) internal successors, (615), 3 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:36:10,440 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 205.0) internal successors, (615), 3 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:36:10,440 INFO L175 Difference]: Start difference. First operand has 28 places, 25 transitions, 62 flow. Second operand 2 states and 204 transitions. [2023-08-30 02:36:10,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 23 transitions, 98 flow [2023-08-30 02:36:10,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 23 transitions, 96 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-30 02:36:10,441 INFO L231 Difference]: Finished difference. Result has 27 places, 23 transitions, 56 flow [2023-08-30 02:36:10,442 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=56, PETRI_PLACES=27, PETRI_TRANSITIONS=23} [2023-08-30 02:36:10,446 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, -1 predicate places. [2023-08-30 02:36:10,446 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 23 transitions, 56 flow [2023-08-30 02:36:10,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 92.0) internal successors, (184), 2 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:36:10,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:36:10,447 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 02:36:10,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 02:36:10,447 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-08-30 02:36:10,448 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:36:10,448 INFO L85 PathProgramCache]: Analyzing trace with hash 18420, now seen corresponding path program 1 times [2023-08-30 02:36:10,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:36:10,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756325163] [2023-08-30 02:36:10,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:36:10,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:36:10,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:36:10,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:36:10,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:36:10,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756325163] [2023-08-30 02:36:10,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756325163] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:36:10,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:36:10,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 02:36:10,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819045253] [2023-08-30 02:36:10,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:36:10,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 02:36:10,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:36:10,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 02:36:10,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 02:36:10,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 205 [2023-08-30 02:36:10,527 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 23 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:36:10,527 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:36:10,527 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 205 [2023-08-30 02:36:10,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:36:10,581 INFO L130 PetriNetUnfolder]: 267/455 cut-off events. [2023-08-30 02:36:10,581 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-30 02:36:10,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 926 conditions, 455 events. 267/455 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2139 event pairs, 222 based on Foata normal form. 0/295 useless extension candidates. Maximal degree in co-relation 921. Up to 438 conditions per place. [2023-08-30 02:36:10,584 INFO L137 encePairwiseOnDemand]: 203/205 looper letters, 18 selfloop transitions, 1 changer transitions 0/22 dead transitions. [2023-08-30 02:36:10,584 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 22 transitions, 92 flow [2023-08-30 02:36:10,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:36:10,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:36:10,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 275 transitions. [2023-08-30 02:36:10,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44715447154471544 [2023-08-30 02:36:10,585 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 275 transitions. [2023-08-30 02:36:10,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 275 transitions. [2023-08-30 02:36:10,586 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:36:10,586 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 275 transitions. [2023-08-30 02:36:10,587 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:36:10,588 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:36:10,588 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:36:10,589 INFO L175 Difference]: Start difference. First operand has 27 places, 23 transitions, 56 flow. Second operand 3 states and 275 transitions. [2023-08-30 02:36:10,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 22 transitions, 92 flow [2023-08-30 02:36:10,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 22 transitions, 92 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 02:36:10,590 INFO L231 Difference]: Finished difference. Result has 28 places, 22 transitions, 56 flow [2023-08-30 02:36:10,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=28, PETRI_TRANSITIONS=22} [2023-08-30 02:36:10,590 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 0 predicate places. [2023-08-30 02:36:10,591 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 22 transitions, 56 flow [2023-08-30 02:36:10,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:36:10,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:36:10,591 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 02:36:10,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 02:36:10,591 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-08-30 02:36:10,592 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:36:10,592 INFO L85 PathProgramCache]: Analyzing trace with hash 18421, now seen corresponding path program 1 times [2023-08-30 02:36:10,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:36:10,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935428825] [2023-08-30 02:36:10,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:36:10,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:36:10,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:36:10,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:36:10,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:36:10,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935428825] [2023-08-30 02:36:10,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935428825] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:36:10,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:36:10,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 02:36:10,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462468306] [2023-08-30 02:36:10,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:36:10,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 02:36:10,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:36:10,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 02:36:10,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 02:36:10,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 205 [2023-08-30 02:36:10,654 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 22 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:36:10,655 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:36:10,655 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 205 [2023-08-30 02:36:10,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:36:10,704 INFO L130 PetriNetUnfolder]: 162/293 cut-off events. [2023-08-30 02:36:10,704 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-30 02:36:10,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 604 conditions, 293 events. 162/293 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1202 event pairs, 132 based on Foata normal form. 0/220 useless extension candidates. Maximal degree in co-relation 598. Up to 276 conditions per place. [2023-08-30 02:36:10,707 INFO L137 encePairwiseOnDemand]: 203/205 looper letters, 17 selfloop transitions, 1 changer transitions 0/21 dead transitions. [2023-08-30 02:36:10,707 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 21 transitions, 90 flow [2023-08-30 02:36:10,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:36:10,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:36:10,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 280 transitions. [2023-08-30 02:36:10,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45528455284552843 [2023-08-30 02:36:10,708 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 280 transitions. [2023-08-30 02:36:10,708 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 280 transitions. [2023-08-30 02:36:10,709 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:36:10,709 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 280 transitions. [2023-08-30 02:36:10,709 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:36:10,711 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:36:10,711 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:36:10,711 INFO L175 Difference]: Start difference. First operand has 28 places, 22 transitions, 56 flow. Second operand 3 states and 280 transitions. [2023-08-30 02:36:10,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 21 transitions, 90 flow [2023-08-30 02:36:10,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 21 transitions, 89 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 02:36:10,712 INFO L231 Difference]: Finished difference. Result has 28 places, 21 transitions, 55 flow [2023-08-30 02:36:10,712 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=53, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=55, PETRI_PLACES=28, PETRI_TRANSITIONS=21} [2023-08-30 02:36:10,713 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 0 predicate places. [2023-08-30 02:36:10,713 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 21 transitions, 55 flow [2023-08-30 02:36:10,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:36:10,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:36:10,714 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 02:36:10,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 02:36:10,714 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-08-30 02:36:10,714 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:36:10,714 INFO L85 PathProgramCache]: Analyzing trace with hash 17715215, now seen corresponding path program 1 times [2023-08-30 02:36:10,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:36:10,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200021993] [2023-08-30 02:36:10,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:36:10,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:36:10,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:36:10,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:36:10,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:36:10,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200021993] [2023-08-30 02:36:10,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200021993] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:36:10,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:36:10,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 02:36:10,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764095841] [2023-08-30 02:36:10,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:36:10,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 02:36:10,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:36:10,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 02:36:10,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 02:36:10,740 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 205 [2023-08-30 02:36:10,741 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 21 transitions, 55 flow. Second operand has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:36:10,741 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:36:10,741 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 205 [2023-08-30 02:36:10,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:36:10,786 INFO L130 PetriNetUnfolder]: 129/237 cut-off events. [2023-08-30 02:36:10,787 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-30 02:36:10,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 492 conditions, 237 events. 129/237 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 951 event pairs, 47 based on Foata normal form. 0/198 useless extension candidates. Maximal degree in co-relation 486. Up to 125 conditions per place. [2023-08-30 02:36:10,788 INFO L137 encePairwiseOnDemand]: 200/205 looper letters, 27 selfloop transitions, 3 changer transitions 0/33 dead transitions. [2023-08-30 02:36:10,788 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 33 transitions, 144 flow [2023-08-30 02:36:10,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:36:10,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:36:10,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 296 transitions. [2023-08-30 02:36:10,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4813008130081301 [2023-08-30 02:36:10,790 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 296 transitions. [2023-08-30 02:36:10,790 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 296 transitions. [2023-08-30 02:36:10,790 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:36:10,790 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 296 transitions. [2023-08-30 02:36:10,791 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:36:10,792 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:36:10,792 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:36:10,792 INFO L175 Difference]: Start difference. First operand has 28 places, 21 transitions, 55 flow. Second operand 3 states and 296 transitions. [2023-08-30 02:36:10,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 33 transitions, 144 flow [2023-08-30 02:36:10,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 33 transitions, 143 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 02:36:10,794 INFO L231 Difference]: Finished difference. Result has 30 places, 23 transitions, 75 flow [2023-08-30 02:36:10,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=75, PETRI_PLACES=30, PETRI_TRANSITIONS=23} [2023-08-30 02:36:10,794 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 2 predicate places. [2023-08-30 02:36:10,795 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 23 transitions, 75 flow [2023-08-30 02:36:10,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:36:10,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:36:10,795 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-30 02:36:10,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 02:36:10,795 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-08-30 02:36:10,796 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:36:10,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1980918907, now seen corresponding path program 1 times [2023-08-30 02:36:10,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:36:10,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393319914] [2023-08-30 02:36:10,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:36:10,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:36:10,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 02:36:10,822 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 02:36:10,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 02:36:10,841 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 02:36:10,841 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 02:36:10,845 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2023-08-30 02:36:10,846 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (5 of 7 remaining) [2023-08-30 02:36:10,846 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 7 remaining) [2023-08-30 02:36:10,846 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 7 remaining) [2023-08-30 02:36:10,846 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (2 of 7 remaining) [2023-08-30 02:36:10,847 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 7 remaining) [2023-08-30 02:36:10,847 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 7 remaining) [2023-08-30 02:36:10,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 02:36:10,847 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-08-30 02:36:10,848 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 02:36:10,848 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-30 02:36:10,882 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 02:36:10,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 142 places, 142 transitions, 305 flow [2023-08-30 02:36:10,914 INFO L130 PetriNetUnfolder]: 10/191 cut-off events. [2023-08-30 02:36:10,914 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-30 02:36:10,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 207 conditions, 191 events. 10/191 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 517 event pairs, 0 based on Foata normal form. 0/162 useless extension candidates. Maximal degree in co-relation 141. Up to 8 conditions per place. [2023-08-30 02:36:10,916 INFO L82 GeneralOperation]: Start removeDead. Operand has 142 places, 142 transitions, 305 flow [2023-08-30 02:36:10,918 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 142 places, 142 transitions, 305 flow [2023-08-30 02:36:10,918 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 02:36:10,918 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 142 places, 142 transitions, 305 flow [2023-08-30 02:36:10,919 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 142 places, 142 transitions, 305 flow [2023-08-30 02:36:10,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 142 places, 142 transitions, 305 flow [2023-08-30 02:36:10,942 INFO L130 PetriNetUnfolder]: 10/191 cut-off events. [2023-08-30 02:36:10,943 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-30 02:36:10,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 207 conditions, 191 events. 10/191 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 517 event pairs, 0 based on Foata normal form. 0/162 useless extension candidates. Maximal degree in co-relation 141. Up to 8 conditions per place. [2023-08-30 02:36:10,950 INFO L119 LiptonReduction]: Number of co-enabled transitions 11880 [2023-08-30 02:36:13,313 INFO L134 LiptonReduction]: Checked pairs total: 15143 [2023-08-30 02:36:13,313 INFO L136 LiptonReduction]: Total number of compositions: 132 [2023-08-30 02:36:13,315 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 02:36:13,315 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@17033b67, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 02:36:13,316 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-08-30 02:36:13,316 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2023-08-30 02:36:13,317 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 02:36:13,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:36:13,317 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 02:36:13,317 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:36:13,317 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:36:13,317 INFO L85 PathProgramCache]: Analyzing trace with hash 28194, now seen corresponding path program 1 times [2023-08-30 02:36:13,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:36:13,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095748636] [2023-08-30 02:36:13,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:36:13,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:36:13,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:36:13,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:36:13,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:36:13,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095748636] [2023-08-30 02:36:13,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095748636] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:36:13,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:36:13,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 02:36:13,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538142395] [2023-08-30 02:36:13,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:36:13,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 02:36:13,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:36:13,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 02:36:13,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 02:36:13,330 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 274 [2023-08-30 02:36:13,330 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 33 transitions, 87 flow. Second operand has 2 states, 2 states have (on average 123.0) internal successors, (246), 2 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:36:13,330 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:36:13,330 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 274 [2023-08-30 02:36:13,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:36:13,816 INFO L130 PetriNetUnfolder]: 4194/5911 cut-off events. [2023-08-30 02:36:13,817 INFO L131 PetriNetUnfolder]: For 403/403 co-relation queries the response was YES. [2023-08-30 02:36:13,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12034 conditions, 5911 events. 4194/5911 cut-off events. For 403/403 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 32577 event pairs, 3546 based on Foata normal form. 0/3724 useless extension candidates. Maximal degree in co-relation 1263. Up to 5795 conditions per place. [2023-08-30 02:36:13,856 INFO L137 encePairwiseOnDemand]: 272/274 looper letters, 28 selfloop transitions, 0 changer transitions 0/31 dead transitions. [2023-08-30 02:36:13,856 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 31 transitions, 139 flow [2023-08-30 02:36:13,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 02:36:13,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 02:36:13,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 274 transitions. [2023-08-30 02:36:13,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2023-08-30 02:36:13,858 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 274 transitions. [2023-08-30 02:36:13,858 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 274 transitions. [2023-08-30 02:36:13,858 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:36:13,858 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 274 transitions. [2023-08-30 02:36:13,859 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 137.0) internal successors, (274), 2 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:36:13,860 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 274.0) internal successors, (822), 3 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:36:13,860 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 274.0) internal successors, (822), 3 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:36:13,861 INFO L175 Difference]: Start difference. First operand has 37 places, 33 transitions, 87 flow. Second operand 2 states and 274 transitions. [2023-08-30 02:36:13,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 31 transitions, 139 flow [2023-08-30 02:36:13,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 31 transitions, 133 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-08-30 02:36:13,865 INFO L231 Difference]: Finished difference. Result has 36 places, 31 transitions, 77 flow [2023-08-30 02:36:13,865 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=77, PETRI_PLACES=36, PETRI_TRANSITIONS=31} [2023-08-30 02:36:13,866 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, -1 predicate places. [2023-08-30 02:36:13,866 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 31 transitions, 77 flow [2023-08-30 02:36:13,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 123.0) internal successors, (246), 2 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:36:13,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:36:13,867 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 02:36:13,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 02:36:13,868 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:36:13,868 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:36:13,868 INFO L85 PathProgramCache]: Analyzing trace with hash 28216, now seen corresponding path program 1 times [2023-08-30 02:36:13,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:36:13,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111299265] [2023-08-30 02:36:13,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:36:13,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:36:13,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:36:13,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:36:13,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:36:13,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111299265] [2023-08-30 02:36:13,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111299265] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:36:13,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:36:13,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 02:36:13,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768667286] [2023-08-30 02:36:13,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:36:13,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 02:36:13,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:36:13,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 02:36:13,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 02:36:13,929 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 274 [2023-08-30 02:36:13,930 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 31 transitions, 77 flow. Second operand has 3 states, 3 states have (on average 116.66666666666667) internal successors, (350), 3 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:36:13,930 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:36:13,930 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 274 [2023-08-30 02:36:13,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:36:14,276 INFO L130 PetriNetUnfolder]: 3060/4377 cut-off events. [2023-08-30 02:36:14,276 INFO L131 PetriNetUnfolder]: For 156/156 co-relation queries the response was YES. [2023-08-30 02:36:14,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8848 conditions, 4377 events. 3060/4377 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 23046 event pairs, 2574 based on Foata normal form. 0/2914 useless extension candidates. Maximal degree in co-relation 8842. Up to 4260 conditions per place. [2023-08-30 02:36:14,306 INFO L137 encePairwiseOnDemand]: 272/274 looper letters, 26 selfloop transitions, 1 changer transitions 0/30 dead transitions. [2023-08-30 02:36:14,306 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 30 transitions, 129 flow [2023-08-30 02:36:14,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:36:14,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:36:14,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 376 transitions. [2023-08-30 02:36:14,308 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45742092457420924 [2023-08-30 02:36:14,308 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 376 transitions. [2023-08-30 02:36:14,308 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 376 transitions. [2023-08-30 02:36:14,309 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:36:14,309 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 376 transitions. [2023-08-30 02:36:14,310 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 125.33333333333333) internal successors, (376), 3 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:36:14,311 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 274.0) internal successors, (1096), 4 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:36:14,312 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 274.0) internal successors, (1096), 4 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:36:14,312 INFO L175 Difference]: Start difference. First operand has 36 places, 31 transitions, 77 flow. Second operand 3 states and 376 transitions. [2023-08-30 02:36:14,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 30 transitions, 129 flow [2023-08-30 02:36:14,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 30 transitions, 129 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 02:36:14,315 INFO L231 Difference]: Finished difference. Result has 37 places, 30 transitions, 77 flow [2023-08-30 02:36:14,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=77, PETRI_PLACES=37, PETRI_TRANSITIONS=30} [2023-08-30 02:36:14,317 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 0 predicate places. [2023-08-30 02:36:14,318 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 30 transitions, 77 flow [2023-08-30 02:36:14,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.66666666666667) internal successors, (350), 3 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:36:14,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:36:14,318 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 02:36:14,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 02:36:14,319 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:36:14,319 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:36:14,319 INFO L85 PathProgramCache]: Analyzing trace with hash 28217, now seen corresponding path program 1 times [2023-08-30 02:36:14,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:36:14,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199230857] [2023-08-30 02:36:14,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:36:14,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:36:14,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:36:14,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:36:14,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:36:14,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199230857] [2023-08-30 02:36:14,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199230857] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:36:14,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:36:14,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 02:36:14,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230002826] [2023-08-30 02:36:14,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:36:14,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 02:36:14,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:36:14,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 02:36:14,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 02:36:14,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 274 [2023-08-30 02:36:14,397 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 30 transitions, 77 flow. Second operand has 3 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:36:14,397 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:36:14,397 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 274 [2023-08-30 02:36:14,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:36:14,638 INFO L130 PetriNetUnfolder]: 1926/2843 cut-off events. [2023-08-30 02:36:14,639 INFO L131 PetriNetUnfolder]: For 156/156 co-relation queries the response was YES. [2023-08-30 02:36:14,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5782 conditions, 2843 events. 1926/2843 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 14054 event pairs, 1602 based on Foata normal form. 0/2104 useless extension candidates. Maximal degree in co-relation 5775. Up to 2726 conditions per place. [2023-08-30 02:36:14,658 INFO L137 encePairwiseOnDemand]: 272/274 looper letters, 25 selfloop transitions, 1 changer transitions 0/29 dead transitions. [2023-08-30 02:36:14,658 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 29 transitions, 127 flow [2023-08-30 02:36:14,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:36:14,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:36:14,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 381 transitions. [2023-08-30 02:36:14,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4635036496350365 [2023-08-30 02:36:14,660 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 381 transitions. [2023-08-30 02:36:14,661 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 381 transitions. [2023-08-30 02:36:14,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:36:14,661 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 381 transitions. [2023-08-30 02:36:14,662 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:36:14,664 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 274.0) internal successors, (1096), 4 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:36:14,664 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 274.0) internal successors, (1096), 4 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:36:14,664 INFO L175 Difference]: Start difference. First operand has 37 places, 30 transitions, 77 flow. Second operand 3 states and 381 transitions. [2023-08-30 02:36:14,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 29 transitions, 127 flow [2023-08-30 02:36:14,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 29 transitions, 126 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 02:36:14,665 INFO L231 Difference]: Finished difference. Result has 37 places, 29 transitions, 76 flow [2023-08-30 02:36:14,666 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=37, PETRI_TRANSITIONS=29} [2023-08-30 02:36:14,666 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 0 predicate places. [2023-08-30 02:36:14,666 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 29 transitions, 76 flow [2023-08-30 02:36:14,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:36:14,667 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:36:14,667 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 02:36:14,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 02:36:14,667 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:36:14,668 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:36:14,668 INFO L85 PathProgramCache]: Analyzing trace with hash 27138079, now seen corresponding path program 1 times [2023-08-30 02:36:14,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:36:14,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557496490] [2023-08-30 02:36:14,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:36:14,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:36:14,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:36:14,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:36:14,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:36:14,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557496490] [2023-08-30 02:36:14,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557496490] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:36:14,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:36:14,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 02:36:14,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140185347] [2023-08-30 02:36:14,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:36:14,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 02:36:14,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:36:14,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 02:36:14,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 02:36:14,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 274 [2023-08-30 02:36:14,698 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 29 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:36:14,698 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:36:14,698 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 274 [2023-08-30 02:36:14,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:36:14,893 INFO L130 PetriNetUnfolder]: 1525/2241 cut-off events. [2023-08-30 02:36:14,894 INFO L131 PetriNetUnfolder]: For 128/128 co-relation queries the response was YES. [2023-08-30 02:36:14,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4589 conditions, 2241 events. 1525/2241 cut-off events. For 128/128 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 11047 event pairs, 461 based on Foata normal form. 0/1800 useless extension candidates. Maximal degree in co-relation 4582. Up to 1621 conditions per place. [2023-08-30 02:36:14,912 INFO L137 encePairwiseOnDemand]: 267/274 looper letters, 40 selfloop transitions, 4 changer transitions 0/47 dead transitions. [2023-08-30 02:36:14,913 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 47 transitions, 210 flow [2023-08-30 02:36:14,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:36:14,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:36:14,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 401 transitions. [2023-08-30 02:36:14,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4878345498783455 [2023-08-30 02:36:14,916 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 401 transitions. [2023-08-30 02:36:14,916 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 401 transitions. [2023-08-30 02:36:14,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:36:14,916 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 401 transitions. [2023-08-30 02:36:14,917 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:36:14,918 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 274.0) internal successors, (1096), 4 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:36:14,919 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 274.0) internal successors, (1096), 4 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:36:14,919 INFO L175 Difference]: Start difference. First operand has 37 places, 29 transitions, 76 flow. Second operand 3 states and 401 transitions. [2023-08-30 02:36:14,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 47 transitions, 210 flow [2023-08-30 02:36:14,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 47 transitions, 209 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 02:36:14,920 INFO L231 Difference]: Finished difference. Result has 39 places, 32 transitions, 105 flow [2023-08-30 02:36:14,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=105, PETRI_PLACES=39, PETRI_TRANSITIONS=32} [2023-08-30 02:36:14,921 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 2 predicate places. [2023-08-30 02:36:14,922 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 32 transitions, 105 flow [2023-08-30 02:36:14,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:36:14,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:36:14,922 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:36:14,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 02:36:14,922 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:36:14,923 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:36:14,923 INFO L85 PathProgramCache]: Analyzing trace with hash -2074042608, now seen corresponding path program 1 times [2023-08-30 02:36:14,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:36:14,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314839280] [2023-08-30 02:36:14,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:36:14,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:36:14,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:36:14,967 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 02:36:14,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:36:14,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314839280] [2023-08-30 02:36:14,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314839280] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:36:14,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:36:14,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 02:36:14,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991685795] [2023-08-30 02:36:14,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:36:14,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 02:36:14,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:36:14,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 02:36:14,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 02:36:14,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 274 [2023-08-30 02:36:14,978 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 32 transitions, 105 flow. Second operand has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:36:14,978 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:36:14,978 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 274 [2023-08-30 02:36:14,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:36:15,121 INFO L130 PetriNetUnfolder]: 1237/1837 cut-off events. [2023-08-30 02:36:15,122 INFO L131 PetriNetUnfolder]: For 326/326 co-relation queries the response was YES. [2023-08-30 02:36:15,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4111 conditions, 1837 events. 1237/1837 cut-off events. For 326/326 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 8396 event pairs, 935 based on Foata normal form. 128/1928 useless extension candidates. Maximal degree in co-relation 4103. Up to 1755 conditions per place. [2023-08-30 02:36:15,130 INFO L137 encePairwiseOnDemand]: 270/274 looper letters, 25 selfloop transitions, 1 changer transitions 0/29 dead transitions. [2023-08-30 02:36:15,130 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 29 transitions, 145 flow [2023-08-30 02:36:15,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:36:15,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:36:15,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 380 transitions. [2023-08-30 02:36:15,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46228710462287104 [2023-08-30 02:36:15,132 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 380 transitions. [2023-08-30 02:36:15,132 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 380 transitions. [2023-08-30 02:36:15,132 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:36:15,132 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 380 transitions. [2023-08-30 02:36:15,133 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:36:15,135 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 274.0) internal successors, (1096), 4 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:36:15,135 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 274.0) internal successors, (1096), 4 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:36:15,135 INFO L175 Difference]: Start difference. First operand has 39 places, 32 transitions, 105 flow. Second operand 3 states and 380 transitions. [2023-08-30 02:36:15,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 29 transitions, 145 flow [2023-08-30 02:36:15,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 29 transitions, 141 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 02:36:15,137 INFO L231 Difference]: Finished difference. Result has 37 places, 29 transitions, 91 flow [2023-08-30 02:36:15,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, PETRI_DIFFERENCE_MINUEND_FLOW=89, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=91, PETRI_PLACES=37, PETRI_TRANSITIONS=29} [2023-08-30 02:36:15,137 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 0 predicate places. [2023-08-30 02:36:15,138 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 29 transitions, 91 flow [2023-08-30 02:36:15,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:36:15,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:36:15,138 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-30 02:36:15,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-30 02:36:15,138 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:36:15,139 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:36:15,139 INFO L85 PathProgramCache]: Analyzing trace with hash 113285987, now seen corresponding path program 1 times [2023-08-30 02:36:15,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:36:15,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659592941] [2023-08-30 02:36:15,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:36:15,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:36:15,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 02:36:15,149 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 02:36:15,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 02:36:15,159 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 02:36:15,161 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 02:36:15,161 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 8 remaining) [2023-08-30 02:36:15,161 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (6 of 8 remaining) [2023-08-30 02:36:15,162 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 8 remaining) [2023-08-30 02:36:15,162 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 8 remaining) [2023-08-30 02:36:15,162 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (3 of 8 remaining) [2023-08-30 02:36:15,162 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 8 remaining) [2023-08-30 02:36:15,162 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 8 remaining) [2023-08-30 02:36:15,163 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 8 remaining) [2023-08-30 02:36:15,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-30 02:36:15,163 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-08-30 02:36:15,164 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 02:36:15,164 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-30 02:36:15,195 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 02:36:15,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 179 places, 179 transitions, 390 flow [2023-08-30 02:36:15,220 INFO L130 PetriNetUnfolder]: 13/245 cut-off events. [2023-08-30 02:36:15,221 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-30 02:36:15,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 268 conditions, 245 events. 13/245 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 767 event pairs, 0 based on Foata normal form. 0/208 useless extension candidates. Maximal degree in co-relation 199. Up to 10 conditions per place. [2023-08-30 02:36:15,223 INFO L82 GeneralOperation]: Start removeDead. Operand has 179 places, 179 transitions, 390 flow [2023-08-30 02:36:15,224 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 179 places, 179 transitions, 390 flow [2023-08-30 02:36:15,224 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 02:36:15,225 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 179 places, 179 transitions, 390 flow [2023-08-30 02:36:15,225 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 179 places, 179 transitions, 390 flow [2023-08-30 02:36:15,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 179 places, 179 transitions, 390 flow [2023-08-30 02:36:15,245 INFO L130 PetriNetUnfolder]: 13/245 cut-off events. [2023-08-30 02:36:15,246 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-30 02:36:15,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 268 conditions, 245 events. 13/245 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 767 event pairs, 0 based on Foata normal form. 0/208 useless extension candidates. Maximal degree in co-relation 199. Up to 10 conditions per place. [2023-08-30 02:36:15,259 INFO L119 LiptonReduction]: Number of co-enabled transitions 21168 [2023-08-30 02:36:17,904 INFO L134 LiptonReduction]: Checked pairs total: 25615 [2023-08-30 02:36:17,904 INFO L136 LiptonReduction]: Total number of compositions: 172 [2023-08-30 02:36:17,906 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 02:36:17,907 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@17033b67, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 02:36:17,907 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-08-30 02:36:17,908 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2023-08-30 02:36:17,908 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 02:36:17,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:36:17,908 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 02:36:17,908 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-08-30 02:36:17,908 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:36:17,909 INFO L85 PathProgramCache]: Analyzing trace with hash 40786, now seen corresponding path program 1 times [2023-08-30 02:36:17,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:36:17,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499140582] [2023-08-30 02:36:17,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:36:17,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:36:17,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:36:17,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:36:17,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:36:17,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499140582] [2023-08-30 02:36:17,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499140582] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:36:17,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:36:17,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 02:36:17,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208270098] [2023-08-30 02:36:17,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:36:17,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 02:36:17,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:36:17,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 02:36:17,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 02:36:17,923 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 351 [2023-08-30 02:36:17,924 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 41 transitions, 114 flow. Second operand has 2 states, 2 states have (on average 154.0) internal successors, (308), 2 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:36:17,924 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:36:17,924 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 351 [2023-08-30 02:36:17,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:36:21,385 INFO L130 PetriNetUnfolder]: 40552/52573 cut-off events. [2023-08-30 02:36:21,386 INFO L131 PetriNetUnfolder]: For 5058/5058 co-relation queries the response was YES. [2023-08-30 02:36:21,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107249 conditions, 52573 events. 40552/52573 cut-off events. For 5058/5058 co-relation queries the response was YES. Maximal size of possible extension queue 2539. Compared 303058 event pairs, 34416 based on Foata normal form. 0/34069 useless extension candidates. Maximal degree in co-relation 12121. Up to 51757 conditions per place. [2023-08-30 02:36:21,672 INFO L137 encePairwiseOnDemand]: 349/351 looper letters, 36 selfloop transitions, 0 changer transitions 0/39 dead transitions. [2023-08-30 02:36:21,673 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 39 transitions, 182 flow [2023-08-30 02:36:21,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 02:36:21,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 02:36:21,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 344 transitions. [2023-08-30 02:36:21,675 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49002849002849 [2023-08-30 02:36:21,675 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 344 transitions. [2023-08-30 02:36:21,675 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 344 transitions. [2023-08-30 02:36:21,675 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:36:21,676 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 344 transitions. [2023-08-30 02:36:21,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 172.0) internal successors, (344), 2 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:36:21,678 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 351.0) internal successors, (1053), 3 states have internal predecessors, (1053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:36:21,678 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 351.0) internal successors, (1053), 3 states have internal predecessors, (1053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:36:21,678 INFO L175 Difference]: Start difference. First operand has 46 places, 41 transitions, 114 flow. Second operand 2 states and 344 transitions. [2023-08-30 02:36:21,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 39 transitions, 182 flow [2023-08-30 02:36:21,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 39 transitions, 170 flow, removed 6 selfloop flow, removed 0 redundant places. [2023-08-30 02:36:21,685 INFO L231 Difference]: Finished difference. Result has 45 places, 39 transitions, 98 flow [2023-08-30 02:36:21,685 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=351, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=98, PETRI_PLACES=45, PETRI_TRANSITIONS=39} [2023-08-30 02:36:21,686 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, -1 predicate places. [2023-08-30 02:36:21,686 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 39 transitions, 98 flow [2023-08-30 02:36:21,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 154.0) internal successors, (308), 2 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:36:21,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:36:21,687 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 02:36:21,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-30 02:36:21,687 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-08-30 02:36:21,688 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:36:21,688 INFO L85 PathProgramCache]: Analyzing trace with hash 40817, now seen corresponding path program 1 times [2023-08-30 02:36:21,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:36:21,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740115700] [2023-08-30 02:36:21,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:36:21,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:36:21,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:36:21,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:36:21,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:36:21,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740115700] [2023-08-30 02:36:21,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740115700] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:36:21,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:36:21,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 02:36:21,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294279829] [2023-08-30 02:36:21,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:36:21,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 02:36:21,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:36:21,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 02:36:21,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 02:36:21,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 351 [2023-08-30 02:36:21,728 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 39 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 147.66666666666666) internal successors, (443), 3 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:36:21,728 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:36:21,728 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 351 [2023-08-30 02:36:21,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:36:24,205 INFO L130 PetriNetUnfolder]: 29814/39034 cut-off events. [2023-08-30 02:36:24,205 INFO L131 PetriNetUnfolder]: For 1115/1115 co-relation queries the response was YES. [2023-08-30 02:36:24,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78702 conditions, 39034 events. 29814/39034 cut-off events. For 1115/1115 co-relation queries the response was YES. Maximal size of possible extension queue 1793. Compared 219499 event pairs, 25212 based on Foata normal form. 0/26399 useless extension candidates. Maximal degree in co-relation 78695. Up to 38217 conditions per place. [2023-08-30 02:36:24,432 INFO L137 encePairwiseOnDemand]: 349/351 looper letters, 34 selfloop transitions, 1 changer transitions 0/38 dead transitions. [2023-08-30 02:36:24,432 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 38 transitions, 166 flow [2023-08-30 02:36:24,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:36:24,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:36:24,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 477 transitions. [2023-08-30 02:36:24,440 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.452991452991453 [2023-08-30 02:36:24,440 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 477 transitions. [2023-08-30 02:36:24,440 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 477 transitions. [2023-08-30 02:36:24,441 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:36:24,442 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 477 transitions. [2023-08-30 02:36:24,443 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 159.0) internal successors, (477), 3 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:36:24,447 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 351.0) internal successors, (1404), 4 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:36:24,449 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 351.0) internal successors, (1404), 4 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:36:24,449 INFO L175 Difference]: Start difference. First operand has 45 places, 39 transitions, 98 flow. Second operand 3 states and 477 transitions. [2023-08-30 02:36:24,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 38 transitions, 166 flow [2023-08-30 02:36:24,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 38 transitions, 166 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 02:36:24,452 INFO L231 Difference]: Finished difference. Result has 46 places, 38 transitions, 98 flow [2023-08-30 02:36:24,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=351, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=46, PETRI_TRANSITIONS=38} [2023-08-30 02:36:24,453 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 0 predicate places. [2023-08-30 02:36:24,453 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 38 transitions, 98 flow [2023-08-30 02:36:24,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 147.66666666666666) internal successors, (443), 3 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:36:24,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:36:24,454 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 02:36:24,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-30 02:36:24,455 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-08-30 02:36:24,455 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:36:24,456 INFO L85 PathProgramCache]: Analyzing trace with hash 40818, now seen corresponding path program 1 times [2023-08-30 02:36:24,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:36:24,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056990415] [2023-08-30 02:36:24,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:36:24,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:36:24,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:36:24,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:36:24,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:36:24,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056990415] [2023-08-30 02:36:24,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056990415] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:36:24,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:36:24,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 02:36:24,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151128211] [2023-08-30 02:36:24,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:36:24,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 02:36:24,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:36:24,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 02:36:24,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 02:36:24,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 351 [2023-08-30 02:36:24,509 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 38 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 148.66666666666666) internal successors, (446), 3 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:36:24,509 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:36:24,509 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 351 [2023-08-30 02:36:24,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:36:25,901 INFO L130 PetriNetUnfolder]: 19076/25495 cut-off events. [2023-08-30 02:36:25,901 INFO L131 PetriNetUnfolder]: For 1115/1115 co-relation queries the response was YES. [2023-08-30 02:36:25,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51626 conditions, 25495 events. 19076/25495 cut-off events. For 1115/1115 co-relation queries the response was YES. Maximal size of possible extension queue 1061. Compared 138431 event pairs, 16008 based on Foata normal form. 0/18729 useless extension candidates. Maximal degree in co-relation 51618. Up to 24678 conditions per place. [2023-08-30 02:36:26,212 INFO L137 encePairwiseOnDemand]: 349/351 looper letters, 33 selfloop transitions, 1 changer transitions 0/37 dead transitions. [2023-08-30 02:36:26,212 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 37 transitions, 164 flow [2023-08-30 02:36:26,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:36:26,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:36:26,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 479 transitions. [2023-08-30 02:36:26,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45489078822412155 [2023-08-30 02:36:26,215 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 479 transitions. [2023-08-30 02:36:26,215 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 479 transitions. [2023-08-30 02:36:26,215 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:36:26,216 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 479 transitions. [2023-08-30 02:36:26,217 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 159.66666666666666) internal successors, (479), 3 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:36:26,218 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 351.0) internal successors, (1404), 4 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:36:26,219 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 351.0) internal successors, (1404), 4 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:36:26,219 INFO L175 Difference]: Start difference. First operand has 46 places, 38 transitions, 98 flow. Second operand 3 states and 479 transitions. [2023-08-30 02:36:26,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 37 transitions, 164 flow [2023-08-30 02:36:26,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 37 transitions, 163 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 02:36:26,223 INFO L231 Difference]: Finished difference. Result has 46 places, 37 transitions, 97 flow [2023-08-30 02:36:26,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=351, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=97, PETRI_PLACES=46, PETRI_TRANSITIONS=37} [2023-08-30 02:36:26,223 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 0 predicate places. [2023-08-30 02:36:26,223 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 37 transitions, 97 flow [2023-08-30 02:36:26,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 148.66666666666666) internal successors, (446), 3 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:36:26,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:36:26,224 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 02:36:26,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-30 02:36:26,224 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-08-30 02:36:26,225 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:36:26,225 INFO L85 PathProgramCache]: Analyzing trace with hash 39258801, now seen corresponding path program 1 times [2023-08-30 02:36:26,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:36:26,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970274969] [2023-08-30 02:36:26,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:36:26,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:36:26,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:36:26,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:36:26,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:36:26,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970274969] [2023-08-30 02:36:26,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970274969] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:36:26,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:36:26,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 02:36:26,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936431928] [2023-08-30 02:36:26,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:36:26,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 02:36:26,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:36:26,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 02:36:26,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 02:36:26,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 351 [2023-08-30 02:36:26,260 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 37 transitions, 97 flow. Second operand has 3 states, 3 states have (on average 149.33333333333334) internal successors, (448), 3 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:36:26,260 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:36:26,260 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 351 [2023-08-30 02:36:26,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:36:27,469 INFO L130 PetriNetUnfolder]: 15543/20499 cut-off events. [2023-08-30 02:36:27,469 INFO L131 PetriNetUnfolder]: For 942/942 co-relation queries the response was YES. [2023-08-30 02:36:27,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41824 conditions, 20499 events. 15543/20499 cut-off events. For 942/942 co-relation queries the response was YES. Maximal size of possible extension queue 1015. Compared 110483 event pairs, 4221 based on Foata normal form. 0/15983 useless extension candidates. Maximal degree in co-relation 41816. Up to 17335 conditions per place. [2023-08-30 02:36:27,571 INFO L137 encePairwiseOnDemand]: 342/351 looper letters, 53 selfloop transitions, 5 changer transitions 0/61 dead transitions. [2023-08-30 02:36:27,571 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 61 transitions, 276 flow [2023-08-30 02:36:27,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:36:27,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:36:27,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 506 transitions. [2023-08-30 02:36:27,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4805318138651472 [2023-08-30 02:36:27,573 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 506 transitions. [2023-08-30 02:36:27,573 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 506 transitions. [2023-08-30 02:36:27,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:36:27,573 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 506 transitions. [2023-08-30 02:36:27,574 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 168.66666666666666) internal successors, (506), 3 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:36:27,576 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 351.0) internal successors, (1404), 4 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:36:27,576 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 351.0) internal successors, (1404), 4 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:36:27,577 INFO L175 Difference]: Start difference. First operand has 46 places, 37 transitions, 97 flow. Second operand 3 states and 506 transitions. [2023-08-30 02:36:27,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 61 transitions, 276 flow [2023-08-30 02:36:27,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 61 transitions, 275 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 02:36:27,579 INFO L231 Difference]: Finished difference. Result has 48 places, 41 transitions, 135 flow [2023-08-30 02:36:27,579 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=351, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=135, PETRI_PLACES=48, PETRI_TRANSITIONS=41} [2023-08-30 02:36:27,579 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 2 predicate places. [2023-08-30 02:36:27,579 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 41 transitions, 135 flow [2023-08-30 02:36:27,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 149.33333333333334) internal successors, (448), 3 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:36:27,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:36:27,580 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:36:27,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-30 02:36:27,580 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-08-30 02:36:27,581 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:36:27,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1610427985, now seen corresponding path program 1 times [2023-08-30 02:36:27,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:36:27,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156897951] [2023-08-30 02:36:27,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:36:27,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:36:27,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:36:27,629 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 02:36:27,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:36:27,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156897951] [2023-08-30 02:36:27,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156897951] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:36:27,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:36:27,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 02:36:27,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087029242] [2023-08-30 02:36:27,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:36:27,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 02:36:27,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:36:27,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 02:36:27,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 02:36:27,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 351 [2023-08-30 02:36:27,642 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 41 transitions, 135 flow. Second operand has 3 states, 3 states have (on average 151.0) internal successors, (453), 3 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:36:27,642 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:36:27,643 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 351 [2023-08-30 02:36:27,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:36:28,403 INFO L130 PetriNetUnfolder]: 10525/14077 cut-off events. [2023-08-30 02:36:28,404 INFO L131 PetriNetUnfolder]: For 2790/2790 co-relation queries the response was YES. [2023-08-30 02:36:28,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31224 conditions, 14077 events. 10525/14077 cut-off events. For 2790/2790 co-relation queries the response was YES. Maximal size of possible extension queue 575. Compared 70371 event pairs, 7967 based on Foata normal form. 1344/15216 useless extension candidates. Maximal degree in co-relation 31215. Up to 13635 conditions per place. [2023-08-30 02:36:28,504 INFO L137 encePairwiseOnDemand]: 346/351 looper letters, 33 selfloop transitions, 1 changer transitions 0/37 dead transitions. [2023-08-30 02:36:28,504 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 37 transitions, 187 flow [2023-08-30 02:36:28,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:36:28,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:36:28,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 478 transitions. [2023-08-30 02:36:28,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4539411206077873 [2023-08-30 02:36:28,506 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 478 transitions. [2023-08-30 02:36:28,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 478 transitions. [2023-08-30 02:36:28,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:36:28,507 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 478 transitions. [2023-08-30 02:36:28,508 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 159.33333333333334) internal successors, (478), 3 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:36:28,510 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 351.0) internal successors, (1404), 4 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:36:28,510 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 351.0) internal successors, (1404), 4 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:36:28,510 INFO L175 Difference]: Start difference. First operand has 48 places, 41 transitions, 135 flow. Second operand 3 states and 478 transitions. [2023-08-30 02:36:28,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 37 transitions, 187 flow [2023-08-30 02:36:28,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 37 transitions, 182 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 02:36:28,517 INFO L231 Difference]: Finished difference. Result has 45 places, 37 transitions, 116 flow [2023-08-30 02:36:28,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=351, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=45, PETRI_TRANSITIONS=37} [2023-08-30 02:36:28,518 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, -1 predicate places. [2023-08-30 02:36:28,518 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 37 transitions, 116 flow [2023-08-30 02:36:28,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 151.0) internal successors, (453), 3 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:36:28,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:36:28,518 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-08-30 02:36:28,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-30 02:36:28,519 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-08-30 02:36:28,519 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:36:28,519 INFO L85 PathProgramCache]: Analyzing trace with hash -921226926, now seen corresponding path program 1 times [2023-08-30 02:36:28,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:36:28,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304560341] [2023-08-30 02:36:28,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:36:28,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:36:28,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 02:36:28,531 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 02:36:28,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 02:36:28,542 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 02:36:28,542 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 02:36:28,542 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2023-08-30 02:36:28,543 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (7 of 9 remaining) [2023-08-30 02:36:28,543 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 9 remaining) [2023-08-30 02:36:28,543 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 9 remaining) [2023-08-30 02:36:28,543 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (4 of 9 remaining) [2023-08-30 02:36:28,543 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (3 of 9 remaining) [2023-08-30 02:36:28,544 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 9 remaining) [2023-08-30 02:36:28,544 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 9 remaining) [2023-08-30 02:36:28,544 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 9 remaining) [2023-08-30 02:36:28,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-30 02:36:28,544 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-08-30 02:36:28,545 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 02:36:28,545 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-08-30 02:36:28,575 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 02:36:28,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 216 places, 216 transitions, 477 flow [2023-08-30 02:36:28,613 INFO L130 PetriNetUnfolder]: 16/299 cut-off events. [2023-08-30 02:36:28,613 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2023-08-30 02:36:28,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 330 conditions, 299 events. 16/299 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1011 event pairs, 0 based on Foata normal form. 0/254 useless extension candidates. Maximal degree in co-relation 258. Up to 12 conditions per place. [2023-08-30 02:36:28,617 INFO L82 GeneralOperation]: Start removeDead. Operand has 216 places, 216 transitions, 477 flow [2023-08-30 02:36:28,619 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 216 places, 216 transitions, 477 flow [2023-08-30 02:36:28,619 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 02:36:28,619 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 216 places, 216 transitions, 477 flow [2023-08-30 02:36:28,619 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 216 places, 216 transitions, 477 flow [2023-08-30 02:36:28,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 216 places, 216 transitions, 477 flow [2023-08-30 02:36:28,656 INFO L130 PetriNetUnfolder]: 16/299 cut-off events. [2023-08-30 02:36:28,656 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2023-08-30 02:36:28,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 330 conditions, 299 events. 16/299 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1011 event pairs, 0 based on Foata normal form. 0/254 useless extension candidates. Maximal degree in co-relation 258. Up to 12 conditions per place. [2023-08-30 02:36:28,673 INFO L119 LiptonReduction]: Number of co-enabled transitions 33120 [2023-08-30 02:36:32,074 INFO L134 LiptonReduction]: Checked pairs total: 41677 [2023-08-30 02:36:32,074 INFO L136 LiptonReduction]: Total number of compositions: 208 [2023-08-30 02:36:32,076 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 02:36:32,076 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@17033b67, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 02:36:32,076 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2023-08-30 02:36:32,077 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2023-08-30 02:36:32,077 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 02:36:32,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:36:32,077 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 02:36:32,077 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-30 02:36:32,077 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:36:32,078 INFO L85 PathProgramCache]: Analyzing trace with hash 55555, now seen corresponding path program 1 times [2023-08-30 02:36:32,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:36:32,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679249472] [2023-08-30 02:36:32,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:36:32,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:36:32,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:36:32,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:36:32,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:36:32,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679249472] [2023-08-30 02:36:32,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679249472] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:36:32,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:36:32,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 02:36:32,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550580883] [2023-08-30 02:36:32,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:36:32,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 02:36:32,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:36:32,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 02:36:32,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 02:36:32,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 424 [2023-08-30 02:36:32,092 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 49 transitions, 143 flow. Second operand has 2 states, 2 states have (on average 185.0) internal successors, (370), 2 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:36:32,092 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:36:32,092 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 424 [2023-08-30 02:36:32,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:37:01,449 INFO L130 PetriNetUnfolder]: 362286/446435 cut-off events. [2023-08-30 02:37:01,449 INFO L131 PetriNetUnfolder]: For 55528/55528 co-relation queries the response was YES. [2023-08-30 02:37:02,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 912075 conditions, 446435 events. 362286/446435 cut-off events. For 55528/55528 co-relation queries the response was YES. Maximal size of possible extension queue 16468. Compared 2654249 event pairs, 308130 based on Foata normal form. 0/294505 useless extension candidates. Maximal degree in co-relation 107888. Up to 440719 conditions per place. [2023-08-30 02:37:03,844 INFO L137 encePairwiseOnDemand]: 422/424 looper letters, 44 selfloop transitions, 0 changer transitions 0/47 dead transitions. [2023-08-30 02:37:03,844 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 47 transitions, 227 flow [2023-08-30 02:37:03,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 02:37:03,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 02:37:03,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 414 transitions. [2023-08-30 02:37:03,846 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4882075471698113 [2023-08-30 02:37:03,846 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 414 transitions. [2023-08-30 02:37:03,846 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 414 transitions. [2023-08-30 02:37:03,846 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:37:03,846 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 414 transitions. [2023-08-30 02:37:03,847 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 207.0) internal successors, (414), 2 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:37:03,849 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 424.0) internal successors, (1272), 3 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:37:03,849 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 424.0) internal successors, (1272), 3 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:37:03,849 INFO L175 Difference]: Start difference. First operand has 55 places, 49 transitions, 143 flow. Second operand 2 states and 414 transitions. [2023-08-30 02:37:03,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 47 transitions, 227 flow [2023-08-30 02:37:03,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 47 transitions, 207 flow, removed 10 selfloop flow, removed 0 redundant places. [2023-08-30 02:37:03,896 INFO L231 Difference]: Finished difference. Result has 54 places, 47 transitions, 119 flow [2023-08-30 02:37:03,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=424, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=119, PETRI_PLACES=54, PETRI_TRANSITIONS=47} [2023-08-30 02:37:03,897 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, -1 predicate places. [2023-08-30 02:37:03,897 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 47 transitions, 119 flow [2023-08-30 02:37:03,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 185.0) internal successors, (370), 2 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:37:03,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:37:03,898 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 02:37:03,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-30 02:37:03,898 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-30 02:37:03,898 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:37:03,898 INFO L85 PathProgramCache]: Analyzing trace with hash 55584, now seen corresponding path program 1 times [2023-08-30 02:37:03,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:37:03,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561171939] [2023-08-30 02:37:03,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:37:03,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:37:03,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:37:03,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:37:03,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:37:03,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561171939] [2023-08-30 02:37:03,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561171939] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:37:03,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:37:03,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 02:37:03,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966580112] [2023-08-30 02:37:03,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:37:03,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 02:37:03,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:37:03,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 02:37:03,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 02:37:03,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 424 [2023-08-30 02:37:03,934 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 47 transitions, 119 flow. Second operand has 3 states, 3 states have (on average 178.66666666666666) internal successors, (536), 3 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:37:03,934 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:37:03,934 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 424 [2023-08-30 02:37:03,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:37:23,968 INFO L130 PetriNetUnfolder]: 267513/332054 cut-off events. [2023-08-30 02:37:23,969 INFO L131 PetriNetUnfolder]: For 7828/7828 co-relation queries the response was YES. [2023-08-30 02:37:24,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 668516 conditions, 332054 events. 267513/332054 cut-off events. For 7828/7828 co-relation queries the response was YES. Maximal size of possible extension queue 11617. Compared 1942430 event pairs, 226896 based on Foata normal form. 0/226810 useless extension candidates. Maximal degree in co-relation 668508. Up to 326337 conditions per place. [2023-08-30 02:37:25,708 INFO L137 encePairwiseOnDemand]: 422/424 looper letters, 42 selfloop transitions, 1 changer transitions 0/46 dead transitions. [2023-08-30 02:37:25,708 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 46 transitions, 203 flow [2023-08-30 02:37:25,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:37:25,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:37:25,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 578 transitions. [2023-08-30 02:37:25,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45440251572327045 [2023-08-30 02:37:25,710 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 578 transitions. [2023-08-30 02:37:25,710 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 578 transitions. [2023-08-30 02:37:25,711 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:37:25,711 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 578 transitions. [2023-08-30 02:37:25,712 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:37:25,714 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 424.0) internal successors, (1696), 4 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:37:25,715 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 424.0) internal successors, (1696), 4 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:37:25,715 INFO L175 Difference]: Start difference. First operand has 54 places, 47 transitions, 119 flow. Second operand 3 states and 578 transitions. [2023-08-30 02:37:25,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 46 transitions, 203 flow [2023-08-30 02:37:25,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 46 transitions, 203 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 02:37:25,745 INFO L231 Difference]: Finished difference. Result has 55 places, 46 transitions, 119 flow [2023-08-30 02:37:25,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=424, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=119, PETRI_PLACES=55, PETRI_TRANSITIONS=46} [2023-08-30 02:37:25,746 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 0 predicate places. [2023-08-30 02:37:25,746 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 46 transitions, 119 flow [2023-08-30 02:37:25,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 178.66666666666666) internal successors, (536), 3 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:37:25,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:37:25,746 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 02:37:25,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-08-30 02:37:25,747 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-30 02:37:25,747 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:37:25,747 INFO L85 PathProgramCache]: Analyzing trace with hash 55585, now seen corresponding path program 1 times [2023-08-30 02:37:25,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:37:25,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615659763] [2023-08-30 02:37:25,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:37:25,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:37:25,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:37:25,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:37:25,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:37:25,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615659763] [2023-08-30 02:37:25,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615659763] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:37:25,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:37:25,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 02:37:25,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005025487] [2023-08-30 02:37:25,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:37:25,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 02:37:25,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:37:25,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 02:37:25,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 02:37:25,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 424 [2023-08-30 02:37:25,790 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 46 transitions, 119 flow. Second operand has 3 states, 3 states have (on average 180.66666666666666) internal successors, (542), 3 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:37:25,790 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:37:25,790 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 424 [2023-08-30 02:37:25,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:37:38,883 INFO L130 PetriNetUnfolder]: 172740/217673 cut-off events. [2023-08-30 02:37:38,883 INFO L131 PetriNetUnfolder]: For 7828/7828 co-relation queries the response was YES. [2023-08-30 02:37:39,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 439756 conditions, 217673 events. 172740/217673 cut-off events. For 7828/7828 co-relation queries the response was YES. Maximal size of possible extension queue 6790. Compared 1245752 event pairs, 145662 based on Foata normal form. 0/159115 useless extension candidates. Maximal degree in co-relation 439747. Up to 211956 conditions per place. [2023-08-30 02:37:40,285 INFO L137 encePairwiseOnDemand]: 422/424 looper letters, 41 selfloop transitions, 1 changer transitions 0/45 dead transitions. [2023-08-30 02:37:40,286 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 45 transitions, 201 flow [2023-08-30 02:37:40,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:37:40,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:37:40,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 583 transitions. [2023-08-30 02:37:40,288 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2023-08-30 02:37:40,288 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 583 transitions. [2023-08-30 02:37:40,288 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 583 transitions. [2023-08-30 02:37:40,288 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:37:40,289 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 583 transitions. [2023-08-30 02:37:40,290 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 194.33333333333334) internal successors, (583), 3 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:37:40,292 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 424.0) internal successors, (1696), 4 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:37:40,292 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 424.0) internal successors, (1696), 4 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:37:40,292 INFO L175 Difference]: Start difference. First operand has 55 places, 46 transitions, 119 flow. Second operand 3 states and 583 transitions. [2023-08-30 02:37:40,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 45 transitions, 201 flow [2023-08-30 02:37:40,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 45 transitions, 200 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 02:37:40,308 INFO L231 Difference]: Finished difference. Result has 55 places, 45 transitions, 118 flow [2023-08-30 02:37:40,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=424, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=55, PETRI_TRANSITIONS=45} [2023-08-30 02:37:40,308 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 0 predicate places. [2023-08-30 02:37:40,308 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 45 transitions, 118 flow [2023-08-30 02:37:40,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 180.66666666666666) internal successors, (542), 3 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:37:40,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:37:40,309 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 02:37:40,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-08-30 02:37:40,309 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-30 02:37:40,310 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:37:40,310 INFO L85 PathProgramCache]: Analyzing trace with hash 53463489, now seen corresponding path program 1 times [2023-08-30 02:37:40,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:37:40,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300521490] [2023-08-30 02:37:40,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:37:40,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:37:40,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:37:40,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:37:40,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:37:40,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300521490] [2023-08-30 02:37:40,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300521490] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:37:40,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:37:40,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 02:37:40,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78970752] [2023-08-30 02:37:40,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:37:40,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 02:37:40,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:37:40,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 02:37:40,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 02:37:40,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 424 [2023-08-30 02:37:40,366 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 45 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 179.33333333333334) internal successors, (538), 3 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:37:40,366 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:37:40,366 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 424 [2023-08-30 02:37:40,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:37:51,686 INFO L130 PetriNetUnfolder]: 146239/181311 cut-off events. [2023-08-30 02:37:51,686 INFO L131 PetriNetUnfolder]: For 6910/6910 co-relation queries the response was YES. [2023-08-30 02:37:52,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 369033 conditions, 181311 events. 146239/181311 cut-off events. For 6910/6910 co-relation queries the response was YES. Maximal size of possible extension queue 6701. Compared 1017136 event pairs, 38427 based on Foata normal form. 0/138379 useless extension candidates. Maximal degree in co-relation 369024. Up to 165923 conditions per place. [2023-08-30 02:37:52,647 INFO L137 encePairwiseOnDemand]: 413/424 looper letters, 66 selfloop transitions, 6 changer transitions 0/75 dead transitions. [2023-08-30 02:37:52,647 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 75 transitions, 342 flow [2023-08-30 02:37:52,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:37:52,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:37:52,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 611 transitions. [2023-08-30 02:37:52,649 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4803459119496855 [2023-08-30 02:37:52,649 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 611 transitions. [2023-08-30 02:37:52,649 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 611 transitions. [2023-08-30 02:37:52,650 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:37:52,650 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 611 transitions. [2023-08-30 02:37:52,651 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 203.66666666666666) internal successors, (611), 3 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:37:52,653 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 424.0) internal successors, (1696), 4 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:37:52,654 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 424.0) internal successors, (1696), 4 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:37:52,654 INFO L175 Difference]: Start difference. First operand has 55 places, 45 transitions, 118 flow. Second operand 3 states and 611 transitions. [2023-08-30 02:37:52,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 75 transitions, 342 flow [2023-08-30 02:37:52,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 75 transitions, 341 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 02:37:52,656 INFO L231 Difference]: Finished difference. Result has 57 places, 50 transitions, 165 flow [2023-08-30 02:37:52,656 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=424, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=165, PETRI_PLACES=57, PETRI_TRANSITIONS=50} [2023-08-30 02:37:52,656 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 2 predicate places. [2023-08-30 02:37:52,656 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 50 transitions, 165 flow [2023-08-30 02:37:52,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 179.33333333333334) internal successors, (538), 3 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:37:52,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:37:52,657 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:37:52,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-08-30 02:37:52,657 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-30 02:37:52,658 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:37:52,658 INFO L85 PathProgramCache]: Analyzing trace with hash 721716685, now seen corresponding path program 1 times [2023-08-30 02:37:52,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:37:52,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144072175] [2023-08-30 02:37:52,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:37:52,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:37:52,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:37:52,707 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 02:37:52,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:37:52,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144072175] [2023-08-30 02:37:52,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144072175] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:37:52,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:37:52,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 02:37:52,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289401232] [2023-08-30 02:37:52,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:37:52,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 02:37:52,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:37:52,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 02:37:52,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 02:37:52,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 424 [2023-08-30 02:37:52,724 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 50 transitions, 165 flow. Second operand has 3 states, 3 states have (on average 181.0) internal successors, (543), 3 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:37:52,724 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:37:52,724 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 424 [2023-08-30 02:37:52,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:37:59,221 INFO L130 PetriNetUnfolder]: 81805/102893 cut-off events. [2023-08-30 02:37:59,221 INFO L131 PetriNetUnfolder]: For 21702/21702 co-relation queries the response was YES. [2023-08-30 02:37:59,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 226857 conditions, 102893 events. 81805/102893 cut-off events. For 21702/21702 co-relation queries the response was YES. Maximal size of possible extension queue 3167. Compared 540295 event pairs, 62095 based on Foata normal form. 11744/113473 useless extension candidates. Maximal degree in co-relation 226847. Up to 100467 conditions per place. [2023-08-30 02:37:59,969 INFO L137 encePairwiseOnDemand]: 418/424 looper letters, 41 selfloop transitions, 1 changer transitions 0/45 dead transitions. [2023-08-30 02:37:59,970 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 45 transitions, 229 flow [2023-08-30 02:37:59,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:37:59,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:37:59,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 576 transitions. [2023-08-30 02:37:59,971 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4528301886792453 [2023-08-30 02:37:59,972 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 576 transitions. [2023-08-30 02:37:59,972 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 576 transitions. [2023-08-30 02:37:59,972 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:37:59,972 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 576 transitions. [2023-08-30 02:37:59,973 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 192.0) internal successors, (576), 3 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:37:59,975 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 424.0) internal successors, (1696), 4 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:37:59,976 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 424.0) internal successors, (1696), 4 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:37:59,976 INFO L175 Difference]: Start difference. First operand has 57 places, 50 transitions, 165 flow. Second operand 3 states and 576 transitions. [2023-08-30 02:37:59,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 45 transitions, 229 flow [2023-08-30 02:37:59,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 45 transitions, 223 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 02:37:59,983 INFO L231 Difference]: Finished difference. Result has 53 places, 45 transitions, 141 flow [2023-08-30 02:37:59,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=424, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=141, PETRI_PLACES=53, PETRI_TRANSITIONS=45} [2023-08-30 02:37:59,984 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, -2 predicate places. [2023-08-30 02:37:59,984 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 45 transitions, 141 flow [2023-08-30 02:37:59,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 181.0) internal successors, (543), 3 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:37:59,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:37:59,985 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:37:59,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-08-30 02:37:59,985 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-30 02:37:59,985 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:37:59,986 INFO L85 PathProgramCache]: Analyzing trace with hash -1175511224, now seen corresponding path program 1 times [2023-08-30 02:37:59,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:37:59,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756219442] [2023-08-30 02:37:59,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:37:59,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:38:00,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 02:38:00,021 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 02:38:00,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 02:38:00,039 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 02:38:00,040 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 02:38:00,040 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2023-08-30 02:38:00,041 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (8 of 10 remaining) [2023-08-30 02:38:00,041 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 10 remaining) [2023-08-30 02:38:00,041 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 10 remaining) [2023-08-30 02:38:00,041 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (5 of 10 remaining) [2023-08-30 02:38:00,041 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (4 of 10 remaining) [2023-08-30 02:38:00,042 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (3 of 10 remaining) [2023-08-30 02:38:00,042 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 10 remaining) [2023-08-30 02:38:00,042 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 10 remaining) [2023-08-30 02:38:00,042 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 10 remaining) [2023-08-30 02:38:00,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-08-30 02:38:00,042 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-08-30 02:38:00,043 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 02:38:00,043 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-08-30 02:38:00,072 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 02:38:00,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 253 places, 253 transitions, 566 flow [2023-08-30 02:38:00,116 INFO L130 PetriNetUnfolder]: 19/353 cut-off events. [2023-08-30 02:38:00,116 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2023-08-30 02:38:00,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 393 conditions, 353 events. 19/353 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1254 event pairs, 0 based on Foata normal form. 0/300 useless extension candidates. Maximal degree in co-relation 319. Up to 14 conditions per place. [2023-08-30 02:38:00,121 INFO L82 GeneralOperation]: Start removeDead. Operand has 253 places, 253 transitions, 566 flow [2023-08-30 02:38:00,123 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 253 places, 253 transitions, 566 flow [2023-08-30 02:38:00,124 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 02:38:00,124 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 253 places, 253 transitions, 566 flow [2023-08-30 02:38:00,124 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 253 places, 253 transitions, 566 flow [2023-08-30 02:38:00,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 253 places, 253 transitions, 566 flow [2023-08-30 02:38:00,170 INFO L130 PetriNetUnfolder]: 19/353 cut-off events. [2023-08-30 02:38:00,170 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2023-08-30 02:38:00,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 393 conditions, 353 events. 19/353 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1254 event pairs, 0 based on Foata normal form. 0/300 useless extension candidates. Maximal degree in co-relation 319. Up to 14 conditions per place. [2023-08-30 02:38:00,189 INFO L119 LiptonReduction]: Number of co-enabled transitions 47736 [2023-08-30 02:38:03,757 INFO L134 LiptonReduction]: Checked pairs total: 59307 [2023-08-30 02:38:03,757 INFO L136 LiptonReduction]: Total number of compositions: 245 [2023-08-30 02:38:03,758 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 02:38:03,760 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@17033b67, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 02:38:03,760 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-08-30 02:38:03,760 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2023-08-30 02:38:03,760 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 02:38:03,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:38:03,761 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 02:38:03,761 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-30 02:38:03,761 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:38:03,761 INFO L85 PathProgramCache]: Analyzing trace with hash 72542, now seen corresponding path program 1 times [2023-08-30 02:38:03,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:38:03,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138628279] [2023-08-30 02:38:03,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:38:03,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:38:03,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:38:03,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:38:03,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:38:03,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138628279] [2023-08-30 02:38:03,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138628279] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:38:03,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:38:03,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 02:38:03,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106579104] [2023-08-30 02:38:03,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:38:03,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 02:38:03,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:38:03,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 02:38:03,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 02:38:03,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 498 [2023-08-30 02:38:03,784 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 57 transitions, 174 flow. Second operand has 2 states, 2 states have (on average 216.0) internal successors, (432), 2 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:38:03,784 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:38:03,784 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 498 [2023-08-30 02:38:03,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand